Burglar-proof safe.



, B. WALTERS.

BURGLAR PROOF SAFE.

ABPLIOATIVON FILIPDAPR. 21. 1905.

mvEwron Y J. Waliii? ATTORNEYS PATENTEDJULY.14,1908.

a the wall ofthe safe.

UNITED BATENT OFFICE.

BENJAMIN WALTERS, OF BUNOLA, PENNSYLVANIA.

BURGLAR-PROOF SAFE.

Specification of Letters Patent.

Patented July 14:, 1908.

Application filed April 21, 1905. Serial No. 256,725.

drill, and also to provide means to prevent.

the insertion of explosives for the purpose of destroying a part of thewall opposing the progress of the drill.

The invention consists of the novel features of construction andcombination of parts hereinafter described, pointed out in the claims,and shown in the accompanying drawings, in which,

Figure 1 represents a safe having a part of one wall broken out andshown partly in sec tion. Fig. 2 is a transverse section through Fig. 3is a erspective view of a part of an inner steel p ate.

In these drawings A represents an outer wall of hard steel, and Brepresents an inner wall also of hard steel, and spaced from the wall A.The wall B has formed upon its face opposing the wall A, a plurality oflaterally extending pointed spurs B pyramidal in form, the bases of saidspurs contacting and their apices extending into the space formedbetween the wall B and the wall A. A packingof soft rubber C is placedagainst the inner faces of the wall A, and contacts with the points ofthe spurs or projections B, between the points B a packing of waste isinserted.

In a safe having a wall constructed in this manner a drill after passingthrough the plate A will travel some distance through the soft rubber,and the Waste where it will have more or less play, and will not be heldclosely to a direct line of advance, and when the point of the drillcontacts with the hard and" polished sides of the spurs,the point of thedrill will slip, and if the drill is forced farther the point will catchin the angle between the s um and be broken. When the drill is withrawnthe packing D and the soft rubber C will close behind the drill pointand the closing of the passage through the rubber and waste made by thedrill will prevent the insertion of an explosive for the pur ose ofblowing oif one or more of the spurs Having thus fully described myinvention,

what I desire to secure'byLetters Patent is A safe comprising inner andouter walls, of metal, pyramidal spurs carried by sa d inner 'wall, apacking of elastic material arranged between the walls and against theinner face of the outer wall, the points of said spurs projecting intothe elastic material and a packing material placed between the spurs, asset forth.

BENJAMIN WVALTERS.

Witnesses:

j WILLIAM McCoY, GRANT FITZSIMMONS. ff

